Roy Keane v Peter Luccin
It's no coincidence that Manchester United's form dipped while skipper Roy Keane was sidelined with his troublesome knee. The Republic of Ireland international is arguably United's most influential player and Alex Ferguson has carefully planned his first start since his return for this game.
Trying to thwart Keane will be Peter Luccin. Marseille think so highly of the 20-year-old that they gave him a 12-year contract last year and he is seen as one of the future stars of French football. Luccin realises how important Keane is and he will have to produce a performance beyond his tender years to deal with him.